I tried to try force 32 bit with sudo dpkg -i --force-architecture mixxx-1.7.2-ubuntu-i386.deb but after that that mixxx doesn't start. mixxx: error while loading shared libraries: libid3tag.so.0: cannot open shared object file: No such file or directory

Hi, I have some problems with Qt 4.6 and Mixxx, the waveform display is showing some random things from the GPU memory, switching the theme fixes the problem until next start. http://img5.imagebanana.com/view/jlj2nmfr/Bildschirmfoto11.png

@Feka: try switching the RCA connectors from the turntable into the soundcard inputs (for example, if the red RCA is in your left input switch it to the right and the same with the black RCA connector). This worked for me :)